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Incircle
Excircle
Locus
Plot
Geometry
An incircle is a circle that is
tangent to each of a
polygon's sides. The HP
Prime can draw an incircle
that is tangent to the sides of
a triangle.
Tap at each vertex of the
triangle, pressing
after each tap.
If you extend two sides of a triangle in the direction opposite
their common vertex and then draw a circle tangent both to
these lines and to the third side of the triangle, you have an
excircle.
Tap at each vertex of the
triangle, pressing
after each tap.
The excircle is drawn tangent
to the side defined by the last
two vertices tapped. In the
example at the right, the last
two vertices tapped were A
and C (or C and A). Thus the excircle is drawn tangent to the
segment AC.
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You can plot expressions of the following types in Plot view:
Function
•
Parametric
•
Polar
•
Sequence
•
Slopefield
•
E
E
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